Is it possible to downgrade rim size? 20 to 19

[iseeu1001]

So my toyota venza v6 comes with 20 inch rims however I have rode a 19 and 20 and can't tell a difference between the ride. I don't know why toyota made 20 inch rims on a cross over... They could have gone with 18 or 19 because its also some what more expensive because 2 michelins cost 600 with taxes and everything in of course. Is it possible to downgrade to a 19 inch rim with no fitment problems?

 

[Dr. Detroit]

Well there is virtually no difference in the overall diameter of the two tire/wheel combinations used for the Venza. The V6 models come with 245/50/R20 tires which have an overall diameter of 29.64 inches and 701.7 revolutions per mile. The I4 models come with 245/55/R19 tires which are 29.61 inches in diameter and have 702.4 revolutions per mile. Thus these two models use the same speedo gearing as they are close enough to to each other in diameter and revs per mile.

Thus you can put the 19" wheels and tires on a V6 and not have a change in speedometer reading. Likewise you could use 20" wheel and tires on an I4 without an issue.

I used the calculator on the 1010tires.com site to compute these combos.

 

[Midwayman]

The only thing you have to worry about with minus sizing is fitting over your brakes. Its not as clear as inner diameter however. If you have 4 pot brakes you have to be careful about the inner profile of the wheel. If you have the more typical sliding calipers you can probably get whatever size has room. On something like a venza I wouldn't be surprised if 17" would easily fit assuming you got the right higher profile tires.

 

[Yuriman]

I'd probably go even smaller than 19, personally. Cheaper tires, better ride quality. The only reason I can imagine them having gone so large is aesthetics.

 

[deadlyapp]

I'd probably go even smaller than 19, personally. Cheaper tires, better ride quality. The only reason I can imagine them having gone so large is aesthetics.

You're at some point going to hit a break even. 20" and 19" tires are probably slightly different in price, maybe the 19's taking a slightly cheaper edge, but going to a something smaller and maintaining the same overall tire circumference means you have a very tall sidewall, which will start costing more at some point.

 

[JCH13]

Yes.

Go to tire rack. Punch in your vehicle information. Search for wheel and tire combinations. Pick 17in wheels. Profit.

 

[JCH13]

You're at some point going to hit a break even. 20" and 19" tires are probably slightly different in price, maybe the 19's taking a slightly cheaper edge, but going to a something smaller and maintaining the same overall tire circumference means you have a very tall sidewall, which will start costing more at some point.

Do you have an example where your supposition holds true?

 

[deadlyapp]

Do you have an example where your supposition holds true?

No, and I'm not going to spend the time right now try to determine if right or wrong. In most cases the change in diameter won't be that significant (hes not trying to go to a 13" rim or something).

 

[pauldun170]

So my toyota venza v6 comes with 20 inch rims however I have rode a 19 and 20 and can't tell a difference between the ride. I don't know why toyota made 20 inch rims on a cross over... They could have gone with 18 or 19 because its also some what more expensive because 2 michelins cost 600 with taxes and everything in of course. Is it possible to downgrade to a 19 inch rim with no fitment problems?

You can go all the way down to 17inch rims.
https://www.tirerack.com/wheels/res...&autoModel=Venza&autoYear=2012&autoModClar=V6

You could swap 17,18 or 19inch wheels from a Sienna or Camry and it will fit

 

[frozentundra123456]

You can go all the way down to 17inch rims.
https://www.tirerack.com/wheels/res...&autoModel=Venza&autoYear=2012&autoModClar=V6

You could swap 17,18 or 19inch wheels from a Sienna or Camry and it will fit

Yea, but of course you will have to change the aspect ratio to keep the same rolling diameter. If you go all the was down to 17" rims, looks like you would have to go to a 65 series aspect ratio. That is a bit narrow for my taste, even on a crossover like the Venza. If you went to an 18" rim, you could go with a 60 series aspect ratio. That would probably be my choice. That said though, I am not sure the perhaps slightly better ride and lower tire cost would make up for the expense of a new set of wheels.

 

[pauldun170]

Yea, but of course you will have to change the aspect ratio to keep the same rolling diameter. If you go all the was down to 17" rims, looks like you would have to go to a 65 series aspect ratio. That is a bit narrow for my taste, even on a crossover like the Venza. If you went to an 18" rim, you could go with a 60 series aspect ratio. That would probably be my choice. That said though, I am not sure the perhaps slightly better ride and lower tire cost would make up for the expense of a new set of wheels.

I'm just letting you know you have several options.
Changing to tire with a larger aspect ratio will change handling. How much it matters depends on how you drive.
17inch rims + 245/65R17 tire is apparently not uncommon for those who mount snow tires on their Venza. For 19inch, it looks like 245/55/19
As for expense, you can swap wheels from any Sienna, Highlander or Camry or Rav4 (check any salvage yard or craigslist\ebay)

check this out
https://www.miata.net/garage/tirecalc.html
and
http://www.venzaownerz.com/f21/

 

[NutBucket]

You're at some point going to hit a break even. 20" and 19" tires are probably slightly different in price, maybe the 19's taking a slightly cheaper edge, but going to a something smaller and maintaining the same overall tire circumference means you have a very tall sidewall, which will start costing more at some point.

The real key is getting to more popular sizes. That's where the money savings are.

 

[compcons]

The real key is getting to more popular sizes. That's where the money savings are.

This 100%. The more common the size of the tire (not just diameter), the less expensive the tires. I moved from 19 to 20 on my SHO as the 19s were an odd size and cost significantly more. It actually cost me less to pickup used 20 wheels and tires than getting new tires.

After you figure out the equivalent 18 and 19 inch sizes, check the exact same tires on Tire rack to determine which size will be cheaper.

 

[iseeu1001]

Hmm seems going downsize there is less and less choices of tires on tirerack and not much of a price difference because I just got 2 michelins premier LTX tires.

 

[eng2d2]

^YOu could do this and try discount tires

 

[JCH13]

No, and I'm not going to spend the time right now try to determine if right or wrong. In most cases the change in diameter won't be that significant (hes not trying to go to a 13" rim or something).

Having looked through tires for this many times over, I've never seen a smaller wheel size equate to a more expensive tire.

Yea, but of course you will have to change the aspect ratio to keep the same rolling diameter. If you go all the was down to 17" rims, looks like you would have to go to a 65 series aspect ratio. That is a bit narrow for my taste, even on a crossover like the Venza. If you went to an 18" rim, you could go with a 60 series aspect ratio. That would probably be my choice. That said though, I am not sure the perhaps slightly better ride and lower tire cost would make up for the expense of a new set of wheels.

If you're swapping tires twice a year, you save ~$200/year, making the ROI pretty good for even new wheels. If one buys used, the ROI is super quick and well worth it. Then add on the lower cost of (presumably winter) tires and it's a total no-brainer.

I'm not sure why you're worried about 'narrow' tires. You understand that the tread width is (or at least, can be) still the same, right? I do not know why one would worry about a generally taller sidewall in a crossover... having said that, I bet that the lighter wheel/tire combo from going to a smaller wheel would result in a nicer steering feel and better suspension response.

The real key is getting to more popular sizes. That's where the money savings are.

Bingo.

 

[frozentundra123456]

Obviously, if the OP is switching summer/all season tires for snow tires in the winter, a second set of wheels is a logical investment. However, most people do not do that, and I got no indication that the OP is planning to either. Even here in Minnesota, most of the people I know don't switch out for winter tires.

I also *am* aware of what aspect ratio means, although I disagree with you assessment that narrower tires will give better steering feel or suspension response. Quite the opposite, in fact. If one goes to a narrower aspect ratio, steering feel and response will decrease because of the additional flex in the taller sidewall, while ride quality should be improved because the more flexible sidewall will more easily absorb bumps. How noticeable either of these changes would be is an open question. IMO, the difference might be noticeable, but certainly not huge. And I never said I was "afraid" of 65 series tires, or that they were dangerous in any way if the proper size is fitted. I simply said that personally I prefer at least a sixty series or wider tire.

 

[thedarkwolf]

I don't think you understand what the numbers mean
http://www.justtires.com/content/content.jsp?pageName=TireSize
A 60 isn't wider or narrower than a 65 it is just the aspect ratio and is meaningless without knowing the actual width of the tire.

 

[Yuriman]

We're getting into semantics, but I lean toward thedarkwolf's opinion - when you have a tire size given in (tread width in millimeters)/(aspect ratio)r(rim diameter), it seems a bit odd to me to call aspect ratio the "width" of the tire. Yes, aspect ratio will go down as the width increases if you're trying to keep the same total wheel diameter, but it isn't width in and of itself. In fact, it's probably less confusing to call it the height of the tire, since changing that number results in a larger or smaller total diameter.

(I know you already know this, of course)

 

[JCH13]

Obviously, if the OP is switching summer/all season tires for snow tires in the winter, a second set of wheels is a logical investment. However, most people do not do that, and I got no indication that the OP is planning to either. Even here in Minnesota, most of the people I know don't switch out for winter tires.

I also *am* aware of what aspect ratio means, although I disagree with you assessment that narrower tires will give better steering feel or suspension response. Quite the opposite, in fact. If one goes to a narrower aspect ratio, steering feel and response will decrease because of the additional flex in the taller sidewall, while ride quality should be improved because the more flexible sidewall will more easily absorb bumps. How noticeable either of these changes would be is an open question. IMO, the difference might be noticeable, but certainly not huge. And I never said I was "afraid" of 65 series tires, or that they were dangerous in any way if the proper size is fitted. I simply said that personally I prefer at least a sixty series or wider tire.

It is really hard to read past your abuse of the terms 'wider' and 'narrower' in this context...

The larger diameter, and heavier, a vehicle's wheels are, more force is required to steer them and they are less eager to return to center. As wheel/tire mass increases, suspension response frequency decreases, acceleration decreases, and a car can start to feel sluggish or muted. Some people, like myself, notice a pleasant change in steering feel and suspension response with a smaller/lighter wheel and tire combinations. Frankly, the steering precision benefits of a super low profile tire are likely to only be realized on the track, driving conditions that a Venza will never see.

 

[pauldun170]

Your cheapest option is to stick a set of 17 inch Rav 4 wheels from the junkyard. At 225/65 r 17, diameter of the tire will be slightly off bit the impact on your speedo will be negligible. Tires are dirt cheap and you have tons of options.
Venza ways a few hundred lbs more so the impact of going to the Rav 4 wheels and tires will be in braking distance and you'll need to avoid the driving like an idiot. Should be better in snow and rain though
I would only go this route for snow tires.

Next cheapest option - Buy new rims (500-800 per set), tires still relatively cheap (90-150 per) and abundant options. Rough roads are less of an issue, and handling might take on a slight bit of mush but for a Venza it will be fine. Tire diameter will be just about the same so no impact to anything speedo or sensor related.
245/65 r17

With 18inch rims that will pretty close to going with 17's
245/60r 18

For 19's, considering the Venza base model came with 19 inch rims you don't need any help on that one.

https://www.tirerack.com/
https://tiresize.com/calculator/

 

[mindless1]

If your only goal is cheaper tires, maybe buy something other than Michelins? However I'd go with 245/60/18 if you want to swap the wheels.

 

[frozentundra123456]

It is really hard to read past your abuse of the terms 'wider' and 'narrower' in this context...

The larger diameter, and heavier, a vehicle's wheels are, more force is required to steer them and they are less eager to return to center. As wheel/tire mass increases, suspension response frequency decreases, acceleration decreases, and a car can start to feel sluggish or muted. Some people, like myself, notice a pleasant change in steering feel and suspension response with a smaller/lighter wheel and tire combinations. Frankly, the steering precision benefits of a super low profile tire are likely to only be realized on the track, driving conditions that a Venza will never see.

Yea, that must be why all those Audis and BMWs have 80 series tires and 13 inch wheels, right? I would agree with the *same* tire size a lighter wheel would theoretically have quicker response. However, the point of a low profile tire is to get quicker, more precise response due to less flex in the sidewall. So it is a trade-off between the less weight and less flex in the sidewall. As for your "feel" of better response with a higher aspect ratio tire, I wont argue with your subjective impressions, but that is certainly not what one would expect. I will accept you point about my incorrect use of 'wider' and 'narrower'. Obviously what I meant by "wider" is "lower aspect ratio", i.e. that the width is greater in relation to the height of the sidewall.

 

[mindless1]

^ frozentundra, you're using the wrong vocabulary and the confusion makes your posts worthless or worse than worthless.

Just stop. Exit gracefully.

 

[frozentundra123456]

^ frozentundra, you're using the wrong vocabulary and the confusion makes your posts worthless or worse than worthless.

Just stop. Exit gracefully.

Not going to argue with you about what I know and dont know, but I will certainly continue to post wherever I please unless instructed not to by a mod.